<!DOCTYPE html>



  


<html class="theme-next mist use-motion" lang="zh-Hans">
<head><meta name="generator" content="Hexo 3.9.0">
  <meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="theme-color" content="#222">









<meta http-equiv="Cache-Control" content="no-transform">
<meta http-equiv="Cache-Control" content="no-siteapp">
















  
  
  <link href="/lib/fancybox/source/jquery.fancybox.css?v=2.1.5" rel="stylesheet" type="text/css">







<link href="/lib/font-awesome/css/font-awesome.min.css?v=4.6.2" rel="stylesheet" type="text/css">

<link href="/css/main.css?v=5.1.4" rel="stylesheet" type="text/css">


  <link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png?v=5.1.4">


  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png?v=5.1.4">


  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png?v=5.1.4">


  <link rel="mask-icon" href="/images/logo.svg?v=5.1.4" color="#222">





  <meta name="keywords" content="mysql,">










<meta name="description" content="官方文档mysql 5.7 json官方文档mysql 5.7 json functions 官方文档mysql 8.0 json">
<meta name="keywords" content="mysql">
<meta property="og:type" content="article">
<meta property="og:title" content="Mysql 5.7 以上版本对JSON字段的操作">
<meta property="og:url" content="http://changyuan.github.io/2020/05/02/mysql57-json/index.html">
<meta property="og:site_name" content="Chang Crazy&#39;s Blog">
<meta property="og:description" content="官方文档mysql 5.7 json官方文档mysql 5.7 json functions 官方文档mysql 8.0 json">
<meta property="og:locale" content="zh-Hans">
<meta property="og:updated_time" content="2020-05-02T07:10:23.000Z">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="Mysql 5.7 以上版本对JSON字段的操作">
<meta name="twitter:description" content="官方文档mysql 5.7 json官方文档mysql 5.7 json functions 官方文档mysql 8.0 json">



<script type="text/javascript" id="hexo.configurations">
  var NexT = window.NexT || {};
  var CONFIG = {
    root: '/',
    scheme: 'Mist',
    version: '5.1.4',
    sidebar: {"position":"left","display":"post","offset":12,"b2t":false,"scrollpercent":false,"onmobile":false},
    fancybox: true,
    tabs: true,
    motion: {"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}},
    duoshuo: {
      userId: '0',
      author: '博主'
    },
    algolia: {
      applicationID: '',
      apiKey: '',
      indexName: '',
      hits: {"per_page":10},
      labels: {"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}
    }
  };
</script>



  <link rel="canonical" href="http://changyuan.github.io/2020/05/02/mysql57-json/">





  <title>Mysql 5.7 以上版本对JSON字段的操作 | Chang Crazy's Blog</title>
  








</head>

<body itemscope itemtype="http://schema.org/WebPage" lang="zh-Hans">

  
  
    
  

  <div class="container sidebar-position-left page-post-detail">
    <div class="headband"></div>

    <header id="header" class="header" itemscope itemtype="http://schema.org/WPHeader">
      <div class="header-inner"><div class="site-brand-wrapper">
  <div class="site-meta ">
    

    <div class="custom-logo-site-title">
      <a href="/" class="brand" rel="start">
        <span class="logo-line-before"><i></i></span>
        <span class="site-title">Chang Crazy's Blog</span>
        <span class="logo-line-after"><i></i></span>
      </a>
    </div>
      
        <p class="site-subtitle">升级自己的操作系统</p>
      
  </div>

  <div class="site-nav-toggle">
    <button>
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
    </button>
  </div>
</div>

<nav class="site-nav">
  

  
    <ul id="menu" class="menu">
      
        
        <li class="menu-item menu-item-home">
          <a href="/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-home"></i> <br>
            
            首页
          </a>
        </li>
      
        
        <li class="menu-item menu-item-archives">
          <a href="/archives/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-archive"></i> <br>
            
            归档
          </a>
        </li>
      
        
        <li class="menu-item menu-item-tags">
          <a href="/tags/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-tags"></i> <br>
            
            标签
          </a>
        </li>
      
        
        <li class="menu-item menu-item-categories">
          <a href="/categories/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-th"></i> <br>
            
            分类
          </a>
        </li>
      
        
        <li class="menu-item menu-item-schedule">
          <a href="/schedule/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-calendar"></i> <br>
            
            日程表
          </a>
        </li>
      
        
        <li class="menu-item menu-item-about">
          <a href="/about/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-user"></i> <br>
            
            关于
          </a>
        </li>
      

      
        <li class="menu-item menu-item-search">
          
            <a href="javascript:;" class="popup-trigger">
          
            
              <i class="menu-item-icon fa fa-search fa-fw"></i> <br>
            
            搜索
          </a>
        </li>
      
    </ul>
  

  
    <div class="site-search">
      
  <div class="popup search-popup local-search-popup">
  <div class="local-search-header clearfix">
    <span class="search-icon">
      <i class="fa fa-search"></i>
    </span>
    <span class="popup-btn-close">
      <i class="fa fa-times-circle"></i>
    </span>
    <div class="local-search-input-wrapper">
      <input autocomplete="off" placeholder="搜索..." spellcheck="false" type="text" id="local-search-input">
    </div>
  </div>
  <div id="local-search-result"></div>
</div>



    </div>
  
</nav>



 </div>
    </header>

    <main id="main" class="main">
      <div class="main-inner">
        <div class="content-wrap">
          <div id="content" class="content">
            

  <div id="posts" class="posts-expand">
    

  

  
  
  

  <article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
  
  
  
  <div class="post-block">
    <link itemprop="mainEntityOfPage" href="http://changyuan.github.io/2020/05/02/mysql57-json/">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="name" content="changyuan">
      <meta itemprop="description" content>
      <meta itemprop="image" content="/images/avatar.jpg">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="Chang Crazy's Blog">
    </span>

    
      <header class="post-header">

        
        
          <h1 class="post-title" itemprop="name headline">Mysql 5.7 以上版本对JSON字段的操作</h1>
        

        <div class="post-meta">
          <span class="post-time">
            
              <span class="post-meta-item-icon">
                <i class="fa fa-calendar-o"></i>
              </span>
              
              <time title="创建于" itemprop="dateCreated datePublished" datetime="2020-05-02T15:10:23+08:00">
                2020-05-02
              </time>
            

            

            
          </span>

          

          
            
          

          
          

          
            <span class="post-meta-divider">|</span>
            <span class="page-pv"><i class="fa fa-file-o"></i>
            <span class="busuanzi-value" id="busuanzi_value_page_pv"></span>
            </span>
          

          

          

        </div>
      </header>
    

    
    
    
    <div class="post-body" itemprop="articleBody">

      
      

      
        <p><a href="https://dev.mysql.com/doc/refman/5.7/en/json.html" target="_blank" rel="noopener">官方文档mysql 5.7 json</a><br><a href="https://dev.mysql.com/doc/refman/5.7/en/json-functions.html" target="_blank" rel="noopener">官方文档mysql 5.7 json functions</a></p>
<p><a href="https://dev.mysql.com/doc/refman/8.0/en/json.html" target="_blank" rel="noopener">官方文档mysql 8.0 json</a></p>
<a id="more"></a>
<table>
<thead>
<tr>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>-&gt;</td>
<td>Return value from JSON column after evaluating path; equivalent to JSON_EXTRACT().</td>
</tr>
<tr>
<td>-&gt;&gt;?(introduced 5.7.13)</td>
<td>Return value from JSON column after evaluating path and unquoting the result; equivalent to JSON_UNQUOTE(JSON_EXTRACT()).</td>
</tr>
<tr>
<td>JSON_APPEND()?(deprecated)</td>
<td>Append data to JSON document</td>
</tr>
<tr>
<td>JSON_ARRAY()</td>
<td>Create JSON array</td>
</tr>
<tr>
<td>JSON_ARRAY_APPEND()</td>
<td>Append data to JSON document</td>
</tr>
<tr>
<td>JSON_ARRAY_INSERT()</td>
<td>Insert into JSON array</td>
</tr>
<tr>
<td>JSON_CONTAINS()</td>
<td>Whether JSON document contains specific object at path</td>
</tr>
<tr>
<td>JSON_CONTAINS_PATH()</td>
<td>Whether JSON document contains any data at path</td>
</tr>
<tr>
<td>JSON_DEPTH()</td>
<td>Maximum depth of JSON document</td>
</tr>
<tr>
<td>JSON_EXTRACT()</td>
<td>Return data from JSON document</td>
</tr>
<tr>
<td>JSON_INSERT()</td>
<td>Insert data into JSON document</td>
</tr>
<tr>
<td>JSON_KEYS()</td>
<td>Array of keys from JSON document</td>
</tr>
<tr>
<td>JSON_LENGTH()</td>
<td>Number of elements in JSON document</td>
</tr>
<tr>
<td>JSON_MERGE()?(deprecated 5.7.22)</td>
<td>“Merge JSON documents</td>
<td>preserving duplicate keys. Deprecated synonym for JSON_MERGE_PRESERVE()”</td>
</tr>
<tr>
<td>JSON_MERGE_PATCH()?(introduced 5.7.22)</td>
<td>“Merge JSON documents</td>
<td>replacing values of duplicate keys”</td>
</tr>
<tr>
<td>JSON_MERGE_PRESERVE()?(introduced 5.7.22)</td>
<td>“Merge JSON documents</td>
<td>preserving duplicate keys”</td>
</tr>
<tr>
<td>JSON_OBJECT()</td>
<td>Create JSON object</td>
</tr>
<tr>
<td>JSON_PRETTY()?(introduced 5.7.22)</td>
<td>Print a JSON document in human-readable format</td>
</tr>
<tr>
<td>JSON_QUOTE()</td>
<td>Quote JSON document</td>
</tr>
<tr>
<td>JSON_REMOVE()</td>
<td>Remove data from JSON document</td>
</tr>
<tr>
<td>JSON_REPLACE()</td>
<td>Replace values in JSON document</td>
</tr>
<tr>
<td>JSON_SEARCH()</td>
<td>Path to value within JSON document</td>
</tr>
<tr>
<td>JSON_SET()</td>
<td>Insert data into JSON document</td>
</tr>
<tr>
<td>JSON_STORAGE_SIZE()?(introduced 5.7.22)</td>
<td>Space used for storage of binary representation of a JSON document</td>
</tr>
<tr>
<td>JSON_TYPE()</td>
<td>Type of JSON value</td>
</tr>
<tr>
<td>JSON_UNQUOTE()</td>
<td>Unquote JSON value</td>
</tr>
<tr>
<td>JSON_VALID()</td>
<td>Whether JSON value is valid</td>
</tr>
</tbody>
</table>
<p>JSON_ARRAY  json数组</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SELECT JSON_ARRAY(1, "abc", NULL, TRUE, CURTIME());</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">| JSON_ARRAY(1, "abc", NULL, TRUE, CURTIME()) |</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">| [1, "abc", null, true, "11:30:24.000000"]   |</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment">-- write table</span></span><br><span class="line"><span class="keyword">create</span> <span class="keyword">table</span> t1(jdoc <span class="keyword">json</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">insert</span> <span class="keyword">into</span> t1(jdoc) <span class="keyword">values</span>(json_array(<span class="string">'a'</span>,<span class="string">'b'</span>,<span class="keyword">now</span>()));</span><br></pre></td></tr></table></figure>
<p>JSON_OBJECT</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SELECT JSON_OBJECT('key1', 1, 'key2', 'abc');</span><br><span class="line">+<span class="comment">---------------------------------------+</span></span><br><span class="line">| JSON_OBJECT('key1', 1, 'key2', 'abc') |</span><br><span class="line">+<span class="comment">---------------------------------------+</span></span><br><span class="line">| &#123;"key1": 1, "key2": "abc"&#125;            |</span><br><span class="line">+<span class="comment">---------------------------------------+</span></span><br></pre></td></tr></table></figure>
<p>JSON_EXTRACT 查询json列  同 column-&gt;path</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SELECT JSON_EXTRACT('&#123;"id": 14, "name": "Aztalan"&#125;', '$.name');</span><br><span class="line">+<span class="comment">---------------------------------------------------------+</span></span><br><span class="line">| JSON_EXTRACT('&#123;"id": 14, "name": "Aztalan"&#125;', '$.name') |</span><br><span class="line">+<span class="comment">---------------------------------------------------------+</span></span><br><span class="line">| "Aztalan"                                               |</span><br><span class="line">+<span class="comment">---------------------------------------------------------+</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment">-- demo</span></span><br><span class="line"><span class="comment">-- 对于某一列是json而言，需要使用内置的函数 json_extract(列名,'$.key') --这个函数有2个参数，第一个参数是json列的列名，第二个参数$.key 其中key为json字符串中某一个key。</span></span><br><span class="line"></span><br><span class="line">&gt; SELECT uid,json_extract(info,'$.mail') AS 'mail',json_extract(info,'$.name') AS 'name' FROM USER;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT c, JSON_EXTRACT(c, "$.id"), g</span><br><span class="line">     &gt; FROM jemp</span><br><span class="line">     &gt; WHERE JSON_EXTRACT(c, "$.id") &gt; 1</span><br><span class="line">     &gt; ORDER BY JSON_EXTRACT(c, "$.name");</span><br><span class="line">+<span class="comment">-------------------------------+-----------+------+</span></span><br><span class="line">| c                             | c-&gt;"$.id" | g    |</span><br><span class="line">+<span class="comment">-------------------------------+-----------+------+</span></span><br><span class="line">| &#123;"id": "3", "name": "Barney"&#125; | "3"       |    3 |</span><br><span class="line">| &#123;"id": "4", "name": "Betty"&#125;  | "4"       |    4 |</span><br><span class="line">| &#123;"id": "2", "name": "Wilma"&#125;  | "2"       |    2 |</span><br><span class="line">+<span class="comment">-------------------------------+-----------+------+</span></span><br><span class="line">3 rows in <span class="keyword">set</span> (<span class="number">0.00</span> sec)</span><br><span class="line"></span><br><span class="line">mysql&gt; <span class="keyword">SELECT</span> c, c-&gt;<span class="string">"$.id"</span>, g</span><br><span class="line">     &gt; <span class="keyword">FROM</span> jemp</span><br><span class="line">     &gt; <span class="keyword">WHERE</span> c-&gt;<span class="string">"$.id"</span> &gt; <span class="number">1</span></span><br><span class="line">     &gt; <span class="keyword">ORDER</span> <span class="keyword">BY</span> c-&gt;<span class="string">"$.name"</span>;</span><br><span class="line">+<span class="comment">-------------------------------+-----------+------+</span></span><br><span class="line">| c                             | c-&gt;"$.id" | g    |</span><br><span class="line">+<span class="comment">-------------------------------+-----------+------+</span></span><br><span class="line">| &#123;"id": "3", "name": "Barney"&#125; | "3"       |    3 |</span><br><span class="line">| &#123;"id": "4", "name": "Betty"&#125;  | "4"       |    4 |</span><br><span class="line">| &#123;"id": "2", "name": "Wilma"&#125;  | "2"       |    2 |</span><br><span class="line">+<span class="comment">-------------------------------+-----------+------+</span></span><br></pre></td></tr></table></figure>
<p>column-&gt;&gt;path</p>
<p>等价于</p>
<blockquote>
<p>JSON_UNQUOTE( JSON_EXTRACT(column, path) )</p>
</blockquote>
<blockquote>
<p>JSON_UNQUOTE(column -&gt; path)</p>
</blockquote>
<blockquote>
<p>column-&gt;&gt;path</p>
</blockquote>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SELECT * FROM jemp WHERE g &gt; 2;</span><br><span class="line">+-------------------------------+------+</span><br><span class="line">| c                             | g    |</span><br><span class="line">+-------------------------------+------+</span><br><span class="line">| &#123;&quot;id&quot;: &quot;3&quot;, &quot;name&quot;: &quot;Barney&quot;&#125; |    3 |</span><br><span class="line">| &#123;&quot;id&quot;: &quot;4&quot;, &quot;name&quot;: &quot;Betty&quot;&#125;  |    4 |</span><br><span class="line">+-------------------------------+------+</span><br><span class="line">2 rows in set (0.01 sec)</span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT c-&gt;&apos;$.name&apos; AS name</span><br><span class="line">    -&gt;     FROM jemp WHERE g &gt; 2;</span><br><span class="line">+----------+</span><br><span class="line">| name     |</span><br><span class="line">+----------+</span><br><span class="line">| &quot;Barney&quot; |</span><br><span class="line">| &quot;Betty&quot;  |</span><br><span class="line">+----------+</span><br><span class="line">2 rows in set (0.00 sec)</span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT JSON_UNQUOTE(c-&gt;&apos;$.name&apos;) AS name</span><br><span class="line">    -&gt;     FROM jemp WHERE g &gt; 2;</span><br><span class="line">+--------+</span><br><span class="line">| name   |</span><br><span class="line">+--------+</span><br><span class="line">| Barney |</span><br><span class="line">| Betty  |</span><br><span class="line">+--------+</span><br><span class="line">2 rows in set (0.00 sec)</span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT c-&gt;&gt;&apos;$.name&apos; AS name</span><br><span class="line">    -&gt;     FROM jemp WHERE g &gt; 2;</span><br><span class="line">+--------+</span><br><span class="line">| name   |</span><br><span class="line">+--------+</span><br><span class="line">| Barney |</span><br><span class="line">| Betty  |</span><br><span class="line">+--------+</span><br><span class="line">2 rows in set (0.00 sec)</span><br></pre></td></tr></table></figure>
<p>JSON_TYPE</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SELECT JSON_TYPE('["a", "b", 1]');</span><br><span class="line">+<span class="comment">----------------------------+</span></span><br><span class="line">| JSON_TYPE('["a", "b", 1]') |</span><br><span class="line">+<span class="comment">----------------------------+</span></span><br><span class="line">| ARRAY                      |</span><br><span class="line">+<span class="comment">----------------------------+</span></span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT JSON_TYPE('"hello"');</span><br><span class="line">+<span class="comment">----------------------+</span></span><br><span class="line">| JSON_TYPE('"hello"') |</span><br><span class="line">+<span class="comment">----------------------+</span></span><br><span class="line">| STRING               |</span><br><span class="line">+<span class="comment">----------------------+</span></span><br><span class="line"></span><br><span class="line"><span class="comment">-- error</span></span><br><span class="line">mysql&gt; SELECT JSON_TYPE('hello');</span><br><span class="line">ERROR 3146 (22032): Invalid data type for JSON data in argument 1</span><br><span class="line">to function json_type; a JSON string or JSON type is required.</span><br></pre></td></tr></table></figure>
<p>JSON_MERGE</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SELECT JSON_MERGE('["a", 1]', '&#123;"key": "value"&#125;');</span><br><span class="line">+<span class="comment">--------------------------------------------+</span></span><br><span class="line">| JSON_MERGE('["a", 1]', '&#123;"key": "value"&#125;') |</span><br><span class="line">+<span class="comment">--------------------------------------------+</span></span><br><span class="line">| ["a", 1, &#123;"key": "value"&#125;]                 |</span><br><span class="line">+<span class="comment">--------------------------------------------+</span></span><br></pre></td></tr></table></figure>
<p>JSON_SEARCH(json_doc, one_or_all, search_str[, escape_char[, path] …])</p>
<p>如果json_doc，search_str或path参数中的任何一个为NULL，则返回NULL；否则返回NULL。文档内没有路径；或找不到search_str。<br>如果json_doc参数不是有效的JSON文档，任何路径参数不是有效的路径表达式，one_or_all不是’one’或’all’或escape_char不是常量表达式，则会发生错误。</p>
<p>要在搜索字符串中指定文字％或_字符，请在其前面加上转义字符。如果escape_char参数丢失或为NULL，则默认值为\。否则，scape_char必须为空或一个字符的常量。<br>search_str:  % 匹配任意的字符（含0）, _  完全匹配一个字符</p>
<p>如果在准备好的语句中使用了JSON_SEARCH（），并且使用？提供了escape_char参数？参数，参数值在执行时可能是恒定的，但在编译时却不是。</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SET @j = '["abc", [&#123;"k": "10"&#125;, "def"], &#123;"x":"abc"&#125;, &#123;"y":"bcd"&#125;]';</span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT JSON_SEARCH(@j, 'one', 'abc');</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| JSON_SEARCH(@j, 'one', 'abc') |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| "$[0]"                        |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT JSON_SEARCH(@j, 'all', 'abc');</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| JSON_SEARCH(@j, 'all', 'abc') |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| ["$[0]", "$[2].x"]            |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line"></span><br><span class="line">mysql&gt; SELECT JSON_SEARCH(@j, 'all', 'ghi');</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| JSON_SEARCH(@j, 'all', 'ghi') |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| NULL                          |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br></pre></td></tr></table></figure>
<p>JSON_CONTAINS(target, candidate[, path])</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SET @j = '&#123;"a": 1, "b": 2, "c": &#123;"d": 4&#125;&#125;';</span><br><span class="line">mysql&gt; SET @j2 = '1';</span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS(@j, @j2, '$.a');</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| JSON_CONTAINS(@j, @j2, '$.a') |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">|                             1 |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS(@j, @j2, '$.b');</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| JSON_CONTAINS(@j, @j2, '$.b') |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">|                             0 |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line"></span><br><span class="line">mysql&gt; SET @j2 = '&#123;"d": 4&#125;';</span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS(@j, @j2, '$.a');</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| JSON_CONTAINS(@j, @j2, '$.a') |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">|                             0 |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS(@j, @j2, '$.c');</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">| JSON_CONTAINS(@j, @j2, '$.c') |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br><span class="line">|                             1 |</span><br><span class="line">+<span class="comment">-------------------------------+</span></span><br></pre></td></tr></table></figure>
<p>JSON_CONTAINS_PATH(json_doc, one_or_all, path[, path] …)</p>
<p>one’: 1 if at least one path exists within the document, 0 otherwise.<br>‘all’: 1 if all paths exist within the document, 0 otherwise.</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SET @j = '&#123;"a": 1, "b": 2, "c": &#123;"d": 4&#125;&#125;';</span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS_PATH(@j, 'one', '$.a', '$.e');</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">| JSON_CONTAINS_PATH(@j, 'one', '$.a', '$.e') |</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">|                                           1 |</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS_PATH(@j, 'all', '$.a', '$.e');</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">| JSON_CONTAINS_PATH(@j, 'all', '$.a', '$.e') |</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">|                                           0 |</span><br><span class="line">+<span class="comment">---------------------------------------------+</span></span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS_PATH(@j, 'one', '$.c.d');</span><br><span class="line">+<span class="comment">----------------------------------------+</span></span><br><span class="line">| JSON_CONTAINS_PATH(@j, 'one', '$.c.d') |</span><br><span class="line">+<span class="comment">----------------------------------------+</span></span><br><span class="line">|                                      1 |</span><br><span class="line">+<span class="comment">----------------------------------------+</span></span><br><span class="line">mysql&gt; SELECT JSON_CONTAINS_PATH(@j, 'one', '$.a.d');</span><br><span class="line">+<span class="comment">----------------------------------------+</span></span><br><span class="line">| JSON_CONTAINS_PATH(@j, 'one', '$.a.d') |</span><br><span class="line">+<span class="comment">----------------------------------------+</span></span><br><span class="line">|                                      0 |</span><br><span class="line">+<span class="comment">----------------------------------------+</span></span><br></pre></td></tr></table></figure>
<p>JSON_SET() replaces existing values and adds nonexisting values.</p>
<p>JSON_INSERT() inserts values without replacing existing values.</p>
<p>JSON_REPLACE() replaces only existing values.</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br></pre></td><td class="code"><pre><span class="line">mysql&gt; SET @j = '&#123; "a": 1, "b": [2, 3]&#125;';</span><br><span class="line">mysql&gt; SELECT JSON_SET(@j, '$.a', 10, '$.c', '[true, false]');</span><br><span class="line">+<span class="comment">-------------------------------------------------+</span></span><br><span class="line">| JSON_SET(@j, '$.a', 10, '$.c', '[true, false]') |</span><br><span class="line">+<span class="comment">-------------------------------------------------+</span></span><br><span class="line">| &#123;"a": 10, "b": [2, 3], "c": "[true, false]"&#125;    |</span><br><span class="line">+<span class="comment">-------------------------------------------------+</span></span><br><span class="line">mysql&gt; SELECT JSON_INSERT(@j, '$.a', 10, '$.c', '[true, false]');</span><br><span class="line">+<span class="comment">----------------------------------------------------+</span></span><br><span class="line">| JSON_INSERT(@j, '$.a', 10, '$.c', '[true, false]') |</span><br><span class="line">+<span class="comment">----------------------------------------------------+</span></span><br><span class="line">| &#123;"a": 1, "b": [2, 3], "c": "[true, false]"&#125;        |</span><br><span class="line">+<span class="comment">----------------------------------------------------+</span></span><br><span class="line">mysql&gt; SELECT JSON_REPLACE(@j, '$.a', 10, '$.c', '[true, false]');</span><br><span class="line">+<span class="comment">-----------------------------------------------------+</span></span><br><span class="line">| JSON_REPLACE(@j, '$.a', 10, '$.c', '[true, false]') |</span><br><span class="line">+<span class="comment">-----------------------------------------------------+</span></span><br><span class="line">| &#123;"a": 10, "b": [2, 3]&#125;                              |</span><br><span class="line">+<span class="comment">-----------------------------------------------------+</span></span><br></pre></td></tr></table></figure>

      
    </div>
    
    
    

    

    
      <div>
        <div style="padding: 10px 0; margin: 20px auto; width: 90%; text-align: center;">
  <div>分享即是成长</div>
  <button id="rewardButton" disable="enable" onclick="var qr = document.getElementById('QR'); if (qr.style.display === 'none') {qr.style.display='block';} else {qr.style.display='none'}">
    <span>打赏</span>
  </button>
  <div id="QR" style="display: none;">

    
      <div id="wechat" style="display: inline-block">
        <img id="wechat_qr" src="/images/wechat-reward-image.png" alt="changyuan 微信支付">
        <p>微信支付</p>
      </div>
    

    

    

  </div>
</div>

      </div>
    

    
      <div>
        <ul class="post-copyright">
  <li class="post-copyright-author">
    <strong>本文作者：</strong>
    changyuan
  </li>
  <li class="post-copyright-link">
    <strong>本文链接：</strong>
    <a href="http://changyuan.github.io/2020/05/02/mysql57-json/" title="Mysql 5.7 以上版本对JSON字段的操作">http://changyuan.github.io/2020/05/02/mysql57-json/</a>
  </li>
  <li class="post-copyright-license">
    <strong>版权声明： </strong>
    本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/3.0/" rel="external nofollow" target="_blank">CC BY-NC-SA 3.0</a> 许可协议。转载请注明出处！
  </li>
</ul>

      </div>
    

    <footer class="post-footer">
      
        <div class="post-tags">
          
            <a href="/tags/mysql/" rel="tag"># mysql</a>
          
        </div>
      

      
      
      

      
        <div class="post-nav">
          <div class="post-nav-next post-nav-item">
            
              <a href="/2020/05/02/google-use-skill/" rel="next" title="Google 搜索技巧">
                <i class="fa fa-chevron-left"></i> Google 搜索技巧
              </a>
            
          </div>

          <span class="post-nav-divider"></span>

          <div class="post-nav-prev post-nav-item">
            
              <a href="/2020/05/02/go-cheatsheet/" rel="prev" title="Go Cheat Sheet">
                Go Cheat Sheet <i class="fa fa-chevron-right"></i>
              </a>
            
          </div>
        </div>
      

      
      
    </footer>
  </div>
  
  
  
  </article>



    <div class="post-spread">
      
    </div>
  </div>


          </div>
          


          

  



        </div>
        
          
  
  <div class="sidebar-toggle">
    <div class="sidebar-toggle-line-wrap">
      <span class="sidebar-toggle-line sidebar-toggle-line-first"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-middle"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-last"></span>
    </div>
  </div>

  <aside id="sidebar" class="sidebar">
    
    <div class="sidebar-inner">

      

      

      <section class="site-overview-wrap sidebar-panel sidebar-panel-active">
        <div class="site-overview">
          <div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
            
              <img class="site-author-image" itemprop="image" src="/images/avatar.jpg" alt="changyuan">
            
              <p class="site-author-name" itemprop="name">changyuan</p>
              <p class="site-description motion-element" itemprop="description">不断升级自己的操作系统</p>
          </div>

          <nav class="site-state motion-element">

            
              <div class="site-state-item site-state-posts">
              
                <a href="/archives/">
              
                  <span class="site-state-item-count">69</span>
                  <span class="site-state-item-name">日志</span>
                </a>
              </div>
            

            
              
              
              <div class="site-state-item site-state-categories">
                <a href="/categories/index.html">
                  <span class="site-state-item-count">1</span>
                  <span class="site-state-item-name">分类</span>
                </a>
              </div>
            

            
              
              
              <div class="site-state-item site-state-tags">
                <a href="/tags/index.html">
                  <span class="site-state-item-count">26</span>
                  <span class="site-state-item-name">标签</span>
                </a>
              </div>
            

          </nav>

          

          
            <div class="links-of-author motion-element">
                
                  <span class="links-of-author-item">
                    <a href="https://github.com/changyuan" target="_blank" title="GitHub">
                      
                        <i class="fa fa-fw fa-fab fa-github"></i>GitHub</a>
                  </span>
                
                  <span class="links-of-author-item">
                    <a href="https://twitter.com/changocean1" target="_blank" title="Twitter">
                      
                        <i class="fa fa-fw fa-fab fa-twitter"></i>Twitter</a>
                  </span>
                
                  <span class="links-of-author-item">
                    <a href="http://weibo.com/changyuan2011" target="_blank" title="Weibo">
                      
                        <i class="fa fa-fw fa-fab fa-weibo"></i>Weibo</a>
                  </span>
                
                  <span class="links-of-author-item">
                    <a href="https://www.douban.com/people/changyuanyuan" target="_blank" title="Zhihu">
                      
                        <i class="fa fa-fw fa-fab fa-quora"></i>Zhihu</a>
                  </span>
                
            </div>
          

          
          

          
          
            <div class="links-of-blogroll motion-element links-of-blogroll-inline">
              <div class="links-of-blogroll-title">
                <i class="fa  fa-fw fa-link"></i>
                Links
              </div>
              <ul class="links-of-blogroll-list">
                
                  <li class="links-of-blogroll-item">
                    <a href="http://weibo.com/changyuan2011" title="Weibo" target="_blank">Weibo</a>
                  </li>
                
                  <li class="links-of-blogroll-item">
                    <a href="https://github.com/changyuan" title="GitHub" target="_blank">GitHub</a>
                  </li>
                
              </ul>
            </div>
          

          

        </div>
      </section>

      

      

    </div>
  </aside>


        
      </div>
    </main>

    <footer id="footer" class="footer">
      <div class="footer-inner">
        <div class="copyright">&copy; <span itemprop="copyrightYear">2023</span>
  <span class="with-love">
    <i class="fa fa-user"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">changyuan</span>

  
</div>









<!-- 网站运行时间的设置 -->
<span id="timeDate">载入天数...</span>
<span id="times">载入时分秒...</span>
<script>
    var now = new Date();
    function createtime() {
        var grt= new Date("08/08/2014 00:00:00");
        now.setTime(now.getTime()+250);
        days = (now - grt ) / 1000 / 60 / 60 / 24; dnum = Math.floor(days);
        hours = (now - grt ) / 1000 / 60 / 60 - (24 * dnum); hnum = Math.floor(hours);
        if(String(hnum).length ==1 ){hnum = "0" + hnum;} minutes = (now - grt ) / 1000 /60 - (24 * 60 * dnum) - (60 * hnum);
        mnum = Math.floor(minutes); if(String(mnum).length ==1 ){mnum = "0" + mnum;}
        seconds = (now - grt ) / 1000 - (24 * 60 * 60 * dnum) - (60 * 60 * hnum) - (60 * mnum);
        snum = Math.round(seconds); if(String(snum).length ==1 ){snum = "0" + snum;}
        document.getElementById("timeDate").innerHTML = "本站已运行 "+dnum+" 天 ";
        document.getElementById("times").innerHTML = hnum + " 小时 " + mnum + " 分 " + snum + " 秒.";
    }
setInterval("createtime()",250);
</script>

        
<div class="busuanzi-count">
  <script async src="https://dn-lbstatics.qbox.me/busuanzi/2.3/busuanzi.pure.mini.js"></script>

  
    <span class="site-uv">
      <i class="fa fa-user"></i>
      <span class="busuanzi-value" id="busuanzi_value_site_uv"></span>
      
    </span>
  

  
    <span class="site-pv">
      <i class="fa fa-eye"></i>
      <span class="busuanzi-value" id="busuanzi_value_site_pv"></span>
      
    </span>
  
</div>








        
      </div>
    </footer>

    
      <div class="back-to-top">
        <i class="fa fa-arrow-up"></i>
        
      </div>
    

    

  </div>

  

<script type="text/javascript">
  if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
    window.Promise = null;
  }
</script>









  












  
  
    <script type="text/javascript" src="/lib/jquery/index.js?v=2.1.3"></script>
  

  
  
    <script type="text/javascript" src="/lib/fastclick/lib/fastclick.min.js?v=1.0.6"></script>
  

  
  
    <script type="text/javascript" src="/lib/jquery_lazyload/jquery.lazyload.js?v=1.9.7"></script>
  

  
  
    <script type="text/javascript" src="/lib/velocity/velocity.min.js?v=1.2.1"></script>
  

  
  
    <script type="text/javascript" src="/lib/velocity/velocity.ui.min.js?v=1.2.1"></script>
  

  
  
    <script type="text/javascript" src="/lib/fancybox/source/jquery.fancybox.pack.js?v=2.1.5"></script>
  


  


  <script type="text/javascript" src="/js/src/utils.js?v=5.1.4"></script>

  <script type="text/javascript" src="/js/src/motion.js?v=5.1.4"></script>



  
  

  
  <script type="text/javascript" src="/js/src/scrollspy.js?v=5.1.4"></script>
<script type="text/javascript" src="/js/src/post-details.js?v=5.1.4"></script>



  


  <script type="text/javascript" src="/js/src/bootstrap.js?v=5.1.4"></script>



  


  




	





  





  












  

  <script type="text/javascript">
    // Popup Window;
    var isfetched = false;
    var isXml = true;
    // Search DB path;
    var search_path = "search.xml";
    if (search_path.length === 0) {
      search_path = "search.xml";
    } else if (/json$/i.test(search_path)) {
      isXml = false;
    }
    var path = "/" + search_path;
    // monitor main search box;

    var onPopupClose = function (e) {
      $('.popup').hide();
      $('#local-search-input').val('');
      $('.search-result-list').remove();
      $('#no-result').remove();
      $(".local-search-pop-overlay").remove();
      $('body').css('overflow', '');
    }

    function proceedsearch() {
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay"></div>')
        .css('overflow', 'hidden');
      $('.search-popup-overlay').click(onPopupClose);
      $('.popup').toggle();
      var $localSearchInput = $('#local-search-input');
      $localSearchInput.attr("autocapitalize", "none");
      $localSearchInput.attr("autocorrect", "off");
      $localSearchInput.focus();
    }

    // search function;
    var searchFunc = function(path, search_id, content_id) {
      'use strict';

      // start loading animation
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay">' +
          '<div id="search-loading-icon">' +
          '<i class="fa fa-spinner fa-pulse fa-5x fa-fw"></i>' +
          '</div>' +
          '</div>')
        .css('overflow', 'hidden');
      $("#search-loading-icon").css('margin', '20% auto 0 auto').css('text-align', 'center');

      $.ajax({
        url: path,
        dataType: isXml ? "xml" : "json",
        async: true,
        success: function(res) {
          // get the contents from search data
          isfetched = true;
          $('.popup').detach().appendTo('.header-inner');
          var datas = isXml ? $("entry", res).map(function() {
            return {
              title: $("title", this).text(),
              content: $("content",this).text(),
              url: $("url" , this).text()
            };
          }).get() : res;
          var input = document.getElementById(search_id);
          var resultContent = document.getElementById(content_id);
          var inputEventFunction = function() {
            var searchText = input.value.trim().toLowerCase();
            var keywords = searchText.split(/[\s\-]+/);
            if (keywords.length > 1) {
              keywords.push(searchText);
            }
            var resultItems = [];
            if (searchText.length > 0) {
              // perform local searching
              datas.forEach(function(data) {
                var isMatch = false;
                var hitCount = 0;
                var searchTextCount = 0;
                var title = data.title.trim();
                var titleInLowerCase = title.toLowerCase();
                var content = data.content.trim().replace(/<[^>]+>/g,"");
                var contentInLowerCase = content.toLowerCase();
                var articleUrl = decodeURIComponent(data.url);
                var indexOfTitle = [];
                var indexOfContent = [];
                // only match articles with not empty titles
                if(title != '') {
                  keywords.forEach(function(keyword) {
                    function getIndexByWord(word, text, caseSensitive) {
                      var wordLen = word.length;
                      if (wordLen === 0) {
                        return [];
                      }
                      var startPosition = 0, position = [], index = [];
                      if (!caseSensitive) {
                        text = text.toLowerCase();
                        word = word.toLowerCase();
                      }
                      while ((position = text.indexOf(word, startPosition)) > -1) {
                        index.push({position: position, word: word});
                        startPosition = position + wordLen;
                      }
                      return index;
                    }

                    indexOfTitle = indexOfTitle.concat(getIndexByWord(keyword, titleInLowerCase, false));
                    indexOfContent = indexOfContent.concat(getIndexByWord(keyword, contentInLowerCase, false));
                  });
                  if (indexOfTitle.length > 0 || indexOfContent.length > 0) {
                    isMatch = true;
                    hitCount = indexOfTitle.length + indexOfContent.length;
                  }
                }

                // show search results

                if (isMatch) {
                  // sort index by position of keyword

                  [indexOfTitle, indexOfContent].forEach(function (index) {
                    index.sort(function (itemLeft, itemRight) {
                      if (itemRight.position !== itemLeft.position) {
                        return itemRight.position - itemLeft.position;
                      } else {
                        return itemLeft.word.length - itemRight.word.length;
                      }
                    });
                  });

                  // merge hits into slices

                  function mergeIntoSlice(text, start, end, index) {
                    var item = index[index.length - 1];
                    var position = item.position;
                    var word = item.word;
                    var hits = [];
                    var searchTextCountInSlice = 0;
                    while (position + word.length <= end && index.length != 0) {
                      if (word === searchText) {
                        searchTextCountInSlice++;
                      }
                      hits.push({position: position, length: word.length});
                      var wordEnd = position + word.length;

                      // move to next position of hit

                      index.pop();
                      while (index.length != 0) {
                        item = index[index.length - 1];
                        position = item.position;
                        word = item.word;
                        if (wordEnd > position) {
                          index.pop();
                        } else {
                          break;
                        }
                      }
                    }
                    searchTextCount += searchTextCountInSlice;
                    return {
                      hits: hits,
                      start: start,
                      end: end,
                      searchTextCount: searchTextCountInSlice
                    };
                  }

                  var slicesOfTitle = [];
                  if (indexOfTitle.length != 0) {
                    slicesOfTitle.push(mergeIntoSlice(title, 0, title.length, indexOfTitle));
                  }

                  var slicesOfContent = [];
                  while (indexOfContent.length != 0) {
                    var item = indexOfContent[indexOfContent.length - 1];
                    var position = item.position;
                    var word = item.word;
                    // cut out 100 characters
                    var start = position - 20;
                    var end = position + 80;
                    if(start < 0){
                      start = 0;
                    }
                    if (end < position + word.length) {
                      end = position + word.length;
                    }
                    if(end > content.length){
                      end = content.length;
                    }
                    slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
                  }

                  // sort slices in content by search text's count and hits' count

                  slicesOfContent.sort(function (sliceLeft, sliceRight) {
                    if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
                      return sliceRight.searchTextCount - sliceLeft.searchTextCount;
                    } else if (sliceLeft.hits.length !== sliceRight.hits.length) {
                      return sliceRight.hits.length - sliceLeft.hits.length;
                    } else {
                      return sliceLeft.start - sliceRight.start;
                    }
                  });

                  // select top N slices in content

                  var upperBound = parseInt('1');
                  if (upperBound >= 0) {
                    slicesOfContent = slicesOfContent.slice(0, upperBound);
                  }

                  // highlight title and content

                  function highlightKeyword(text, slice) {
                    var result = '';
                    var prevEnd = slice.start;
                    slice.hits.forEach(function (hit) {
                      result += text.substring(prevEnd, hit.position);
                      var end = hit.position + hit.length;
                      result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
                      prevEnd = end;
                    });
                    result += text.substring(prevEnd, slice.end);
                    return result;
                  }

                  var resultItem = '';

                  if (slicesOfTitle.length != 0) {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
                  } else {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
                  }

                  slicesOfContent.forEach(function (slice) {
                    resultItem += "<a href='" + articleUrl + "'>" +
                      "<p class=\"search-result\">" + highlightKeyword(content, slice) +
                      "...</p>" + "</a>";
                  });

                  resultItem += "</li>";
                  resultItems.push({
                    item: resultItem,
                    searchTextCount: searchTextCount,
                    hitCount: hitCount,
                    id: resultItems.length
                  });
                }
              })
            };
            if (keywords.length === 1 && keywords[0] === "") {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x" /></div>'
            } else if (resultItems.length === 0) {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x" /></div>'
            } else {
              resultItems.sort(function (resultLeft, resultRight) {
                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
  </script>





  

  

  

  
  

  

  

  

</body>
</html>
